JBIDE-14578 Set Window Icon for Ripple window opened when project is run in CordovaSim

- substitution two icons in the taskbar with one 'CordovaSim' icon
- adding text for CordovaSim window
- minor css cosmetics

Substitution two icons in the taskbar with one 'CordovaSim' icon, adding text for CordovaSim window, minor css cosmetics